Home / 6,107.70-8,428.78-3,455.51

Finding the Fourth Proportional to 6,107.70, 8,428.78 and 3,455.51

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Solution

The fourth proportional to 6,107.70, 8,428.78 and 3,455.51 is: 4,768.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,107.70 : 8,428.78 = 3,455.51 : x
  2. Step 2: Convert to fraction form
    6,107.70/8,428.78 = 3,455.51/x
  3. Step 3: Cross multiply
    6,107.70x = 8,428.78 × 3,455.51
  4. Step 4: Simplify right side
    6,107.70x = 29,125,733.58
  5. Step 5: Solve for x
    x = 29,125,733.58/6,107.70
  6. Step 6: Final answer
    x = 4,768.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.